bi�ki�ni Audio Help /bɪˈkini/ Pronunciation Key - Show Spelled Pronunciation[bi-kee-nee] Pronunciation Key - Show IPA Pronunciation �noun, plural -nis. 1. a very brief, close-fitting, two-piece bathing suit for women or girls. 2. a very brief, close-fitting pair of bathing trunks for men or boys. 3. Often, bikinis. underwear briefs that are fitted low on the hip or below it. Bi�ki�ni Audio Help /bɪˈkini/ Pronunciation Key - Show Spelled Pronunciation[bi-kee-nee] Pronunciation Key - Show IPA Pronunciation �noun an atoll in the N Pacific, in the Marshall Islands: atomic bomb tests 1946. 3 sq. mi. (8 sq. km). A bikini or two-piece is a type of women's swimsuit, characterized by two separate parts � one covering the breasts, the other the groin (and optionally the buttocks), leaving an uncovered area between the two garments. It is often worn in hot weather and while swimming. The shapes of both parts of a bikini closely resemble women's underwear, and the lower part of a bikini can therefore range from the more revealing thong or g-string to briefs and the more modest square-cut shorts. 2.1 String bikini 2.2 Monokini 2.3 Microkini 2.4 Tankini 2.5 Sling bikini 2.6 Sports bikini Bikini (band), a Hungarian rock band Bikini Kill, an American punk rock band Bikini Atoll, part of the Marshall Islands in the Pacific Ocean A type of cloth top for an automobile that covers from the windshield back to just behind the first row of seats is referred to as a "bikini top"